423 Area Code Information
State: TN
Largest City in Area: CHATTANOOGA
Where is Area Code 423? Area code (423) is in the state of TN. The PeopleSearchNow database has 3,870,409 records on file with a phone number in the area code of (423). Below, are the major cities in the area code (423).
Area Codes Starting with 4
Major Cities in 423
- CHATTANOOGA, TN (798,598)
- JOHNSON CITY, TN (345,336)
- KNOXVILLE, TN (326,804)
- KINGSPORT, TN (317,353)
- CLEVELAND, TN (303,479)
- HIXSON, TN (229,209)
- MORRISTOWN, TN (169,598)
- BRISTOL, TN (146,860)
- GREENEVILLE, TN (144,946)
- OOLTEWAH, TN (141,202)
Zip Codes in 423
- 37311
- 37312
- 37323
- 37343
- 37363
- 37379
- 37405
- 37411
- 37412
- 37415
- 37416
- 37421
- 37601
- 37604
- 37620
- 37643
- 37659
- 37660
- 37664
- 37814